Transformer¦s oil
Transformer¦s oil
(OP)
We have a 5 MVA aux elevation transformer (3000gls) and I dont have the spec. for the oil that is currently into the transformer, We performed an oil recirculation and I need to complete the oil level adding around 100 gl dielectric oil. Can I just mixed the oils or I have to make oil analisys first??
Negro
Negro






RE: Transformer¦s oil
Probably the transformer manufacturer could help to determine the oil used in the unit. If the information is not available, the oil testing company could help to identify the oil physical and chemical characteristics.
For the best result of cooling and working performance, the new supplemental oil should be compatible with the existing oil in term of type (mineral, silicon, etc), additives, density, viscosity, etc.
RE: Transformer¦s oil
Articles..
www.netaworld.org/files/ItemFileA424.pdf
www.netaworld.org/files/ItemFileA169.pdf
There are a lot of test labs that could advise, like..
www.actiinc.com/services.html
North American firms for transformer testing..
www.industryclick.com/bg.asp?codeID=173975&par...
www.industryclick.com/bg.asp?codeID=173974&par...
RE: Transformer¦s oil
I would advise that you test your oil esp for seeing the oxygen inhibitor content. Class I mineral oils have <0.07 % oxygen inhibitor and class II has about 0.2 to 0.3 %. We got the advice from Siemens local transformer factory that oils can be mixed provided that they are of same class.